Malicious PDF — malware analysis report

Static analysis result for SHA-256 d7f3e39c66eeadad…

MALICIOUS

PDF

37.4 KB Created: 2021-07-05 16:48:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 498b136eecaa40880eae7c437cf054d5 SHA-1: d7333aee4e7362cd6ed42daa4e21d8459096a989 SHA-256: d7f3e39c66eeadad65f1ade1bf81ff0360d817a046db06685379dd8944d91166
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free in-game currency. The primary redirector URL is http://netcdn.tw/app/431946152/cheat-sur-tout-les-jeux-roblox-game-hack. This lure is designed to trick users into clicking through to potentially malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly indicate a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/431946152/cheat-sur-tout-les-jeux-roblox-game-hack In PDF document text
    • http://library.unissula.ac.id/fk/repository/cupcake-jailbreak-hack-download-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-hack-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-studio-free-download-for-ipad_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-hack-generater_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/robux-help-com-to-earn-free-25k-robux_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-promo-codes-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-edit-this-cookie_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/change-name-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/invincibility-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/free-robux-extension_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/how-to-hack-roblox-jailbreak-on-ios_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fk/repository/roblox-hack-robux-4_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/minecraft-net-download-free_GM479516143.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • http://library.unissula.ac.id/fe/repository/hack-coin-master-2021-pc_GM406889139.pdfIn PDF document text
    • http://library.unissula.ac.id/fk//repository/minecraft-free-demo_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003c2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C2B 22488 bytes
SHA-256: b88463a0e079b1639f20ab75aad2bc3540a23ee2e6abf466f476c90f00971767
font_01_sfnt_off00006e11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E11 18876 bytes
SHA-256: 49140e50f030a8f12108f5ba876b63be79db301ec4e1ef47da6cc404e6705cce

Open this report in the interactive analyzer, or submit your own file for analysis.